Wilfred Spiegelenburg created YUNIKORN-3317:
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Summary: Foreign allocations not tracked in core
Key: YUNIKORN-3317
URL: https://issues.apache.org/jira/browse/YUNIKORN-3317
Project: Apache YuniKorn
Issue Type: Bug
Affects Versions: 1.8.0, 1.7.0, 1.9.0
Reporter: Wilfred Spiegelenburg
Assignee: Wilfred Spiegelenburg
Foreign allocations are pods managed by either the node (static pods) or by a
different scheduler in the cluster (not YuniKorn). The pods can show up in the
informer as an update without a create event. This breaks foreign pod tracking
in the core:
{code:java}
{"stream":"stdout","log":"2026-07-08T11:08:44.202Z\tDEBUG\tshim.cache.external\texternal/scheduler_cache.go:672\tScheduler
cache state (UpdatePod.Pre)\t{\"nodes\": 10, \"pods\": 217, \"assumed\": 45,
\"pendingAllocs\": 0, \"inProgressAllocs\": 0, \"podsAssigned\": 179,
\"schedulingTasks\": 38, \"phases\": {\"Pending\":64,\"Running\":153}}"}
{"stream":"stdout","log":"2026-07-08T11:08:44.202Z\tDEBUG\tshim.cache.external\texternal/scheduler_cache.go:467\tPutting
pod in cache\t{\"podName\": \"calico-node-b46nq\", \"podKey\":
\"ac73ed90-8216-418c-b312-ec16c747f2c8\"}"}
{"stream":"stdout","log":"2026-07-08T11:08:44.202Z\tDEBUG\tshim.cache.external\texternal/scheduler_cache.go:672\tScheduler
cache state (UpdatePod.Post)\t{\"nodes\": 10, \"pods\": 218, \"assumed\": 45,
\"pendingAllocs\": 0, \"inProgressAllocs\": 0, \"podsAssigned\": 180,
\"schedulingTasks\": 38, \"phases\": {\"Pending\":65,\"Running\":153}}"}
{"stream":"stdout","log":"2026-07-08T11:08:44.202Z\tDEBUG\tshim.context\tcache/context.go:405\tpod
is assigned to a node, trigger foreign resource update\t{\"namespace\":
\"kube-system\", \"podName\": \"calico-node-b46nq\", \"podStatusBefore\":
\"Pending\", \"podStatusCurrent\": \"Pending\"}"}
{{code}
The log shows:
* adding a new pod to the cache: 217 to218
* already assigned: 179 to 180
* podStatusBefore is {{Pending}} which means we have an “old” and “new” pod
which only happens for an update event.
That means we see a new pod but it came in as an update from the informer.
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